This is the most intelligent summary of Ballmer's tenure I've seen. It falls back on more facts and numbers than I think all of the others I've read combined.

As technology people, we look at companies through a different lens than investors, shareholders and the like. We want to be impressed, we want to be given a new toy that disrupts existing markets and allows us to develop software in some new way, but that isn't the only way to make money and create value.